This is part of the water filtration system for the Seed Eco-Home by the Open Building Institute. Not shown are the actual filters, and an ozonator that injects ozone into the cisterns.
Rainwater catchment as well as a surface pond feed this system. The rainwater goes through a first flush diverter directly into the top of the cistern, and the surface pond feeds through the sand filter into the cisterns. The water filtration panel follows the cisterns.
See more info at http://openbuildinginstitute.org/workshops-events/. The technical designs for the Seed Eco-Home subsystems are at http://opensourceecology.org/wiki/Seed_Eco-Home_Index
If you want to join the documentation team for the Seed Eco-Home, sign up as an OSE Developer. http://opensourceecology.org/wiki/OSE_Developers
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